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Replace sha1 and tiny-keccak with RustCrypto crates (#1014)

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* replace sha1 and tiny-keccak with RustCrypto crates

* Update misc/multihash/src/lib.rs

Co-Authored-By: newpavlov <newpavlov@gmail.com>
This commit is contained in:
Artyom Pavlov
2019-03-20 18:19:50 +00:00
committed by Pierre Krieger
parent 761c46ef19
commit 3f05de6d7c
2 changed files with 17 additions and 37 deletions
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50
misc/multihash/src/lib.rs
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@ -10,44 +10,24 @@ mod hashes;
use sha2::Digest;
use std::fmt::Write;
use tiny_keccak::Keccak;
use unsigned_varint::{decode, encode};
pub use self::errors::{DecodeError, DecodeOwnedError, EncodeError};
pub use self::hashes::Hash;
// Helper macro for encoding input into output using sha1, sha2, tiny_keccak, or blake2
macro_rules! encode {
(sha1, Sha1, $input:expr, $output:expr) => {{
let mut hasher = sha1::Sha1::new();
hasher.update($input);
$output.copy_from_slice(&hasher.digest().bytes());
}};
(sha2, $algorithm:ident, $input:expr, $output:expr) => {{
let mut hasher = sha2::$algorithm::default();
hasher.input($input);
$output.copy_from_slice(hasher.result().as_ref());
}};
(tiny, $constructor:ident, $input:expr, $output:expr) => {{
let mut kec = Keccak::$constructor();
kec.update($input);
kec.finalize($output);
}};
(blake2, $algorithm:ident, $input:expr, $output:expr) => {{
let mut hasher = blake2::$algorithm::default();
hasher.input($input);
$output.copy_from_slice(hasher.result().as_ref());
}};
/// Helper function for encoding input into output using given `Digest`
fn digest_encode<D: Digest>(input: &[u8], output: &mut [u8]) {
output.copy_from_slice(&D::digest(input))
}
// And another one to keep the matching DRY
macro_rules! match_encoder {
($hash:ident for ($input:expr, $output:expr) {
$( $hashtype:ident => $lib:ident :: $method:ident, )*
($hash_id:ident for ($input:expr, $output:expr) {
$( $hashtype:ident => $hash_ty:path, )*
}) => ({
match $hash {
match $hash_id {
$(
Hash::$hashtype => encode!($lib, $method, $input, $output),
Hash::$hashtype => digest_encode::<$hash_ty>($input, $output),
)*
_ => return Err(EncodeError::UnsupportedType)
@ -90,14 +70,14 @@ pub fn encode(hash: Hash, input: &[u8]) -> Result<Multihash, EncodeError> {
SHA1 => sha1::Sha1,
SHA2256 => sha2::Sha256,
SHA2512 => sha2::Sha512,
SHA3224 => tiny::new_sha3_224,
SHA3256 => tiny::new_sha3_256,
SHA3384 => tiny::new_sha3_384,
SHA3512 => tiny::new_sha3_512,
Keccak224 => tiny::new_keccak224,
Keccak256 => tiny::new_keccak256,
Keccak384 => tiny::new_keccak384,
Keccak512 => tiny::new_keccak512,
SHA3224 => sha3::Sha3_224,
SHA3256 => sha3::Sha3_256,
SHA3384 => sha3::Sha3_384,
SHA3512 => sha3::Sha3_512,
Keccak224 => sha3::Keccak224,
Keccak256 => sha3::Keccak256,
Keccak384 => sha3::Keccak384,
Keccak512 => sha3::Keccak512,
Blake2b512 => blake2::Blake2b,
Blake2s256 => blake2::Blake2s,
});